Where do you go to learn how to make ice cream?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Count the number of balls in picture below:

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

What kind of band never plays music?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Why Aeroplane windows are round?